Sr., Jr., Ph.D., M.D., B.A., M.A., D.D.S.
These are standard abbreviations, with periods. The APA Publication Manual recommends not using periods with degrees; other reference manuals do recommend using periods, so use your own judgment on this issue. All sources advise against using titles before and after a name at the same time (i.e., she can be Dr. Juanita Espinoza or Juanita Espinoza, PhD, but she cannot be Dr. Juanita Espinoza, PhD). And we do not abbreviate a title that isn't attached to a name: "We went to see the doctor (not dr.) yesterday.
Underline or italicize -saf
Depending on the style guide you've been given, you can either italicize the opera's title or include it in quotes. The key is to be consistent with your titles throughout your manuscript.
The name should be capitalized.
johana
It's commonly punctuated as Amar'e.
The Barloon's is correct.
Always punctuate a simple declarative sentence by putting a period at the end.
It should be in quotation marks.
Two Princes by Spin Doctors
No it is not a rule. You should punctuate as normal.
The cast of Titles - includes: Name
Panic! at the disco